CN105591109B - carbon material and preparation method thereof and lithium ion battery - Google Patents
carbon material and preparation method thereof and lithium ion battery Download PDFInfo
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- CN105591109B CN105591109B CN201410648524.1A CN201410648524A CN105591109B CN 105591109 B CN105591109 B CN 105591109B CN 201410648524 A CN201410648524 A CN 201410648524A CN 105591109 B CN105591109 B CN 105591109B
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Abstract
The invention provides a kind of carbon material, including：Carbon core；The first material with carbon on carbon core surface is coated on, is coated on second carbon material on first material with carbon surface；The carbon core is graphite or MCMB；The first material with carbon is hard carbon, graphene or CNT, and second carbon material is amorphous carbon or graphite.The application contributes the carbon material of energy density to be used as carbon core by setting；First material with carbon of the carbon material of offer power density, life-span and security as carbon coated core；With low specific surface area, second carbon material of the carbon material at solid phase electrode interface as cladding first material with carbon is easily formed, makes the carbon material of double-coating of the application offer make battery that there is higher energy density and power density as electrode material.Present invention also provides the preparation method of the carbon material.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly to a kind of carbon material and preparation method thereof and lithium-ion electric
Pond.
Background technology
Lithium power technology has become the important component of modern society, is all using lithium from smart mobile phone to electric car etc.
The portable energy source that electricity provides.Lithium ion battery realizes commercialization in 1991 by Sony earliest, continues to develop afterwards, technically
Significant progress is achieved, but the energy density of battery, power, life-span and security etc. still have defect, no
The demand of social development can be fully met, therefore turns into the problem of research staff is in the urgent need to address.It is known that battery performance
It is heavily dependent on material technology, the raising of battery performance is realized typically by negative pole and positive electrode is improved.
The commercialized lithium ion battery overwhelming majority uses a certain or several carbon materials as negative pole now.1973
Carbon material is suggested first can be used as intercalation electrode, then be widely used.Using different carbon materials material precursors, system
Preparation Method and heat treatment/chemistry method can obtain having different crystallinity, chemical composition and microstructure
Carbon material.
The carbon material of lithium ion intercalation mainly has graphite, coke, mesophase pitch, carbon fiber, pyrolytic carbon, carbon 60 and received
Rice carbon pipe etc..Amorphous carbon (such as soft carbon and hard carbon) is relative to crystalloid carbon material (such as Delanium and native graphite)
For, advantage is had more in terms of life-span, power and security performance, but graphite material is then in energy density and advantage in price
Substantially.Based on this, in order to improve the life-span of battery, power and security performance, soft carbon or hard carbon are often blended into stone by people
The step of negative pole is made in ink material, but is the increase in blending while also increase production cost.Therefore, how low cost is manufactured
High performance advanced carbon electrode material is always a major challenge of lithium electrician's industry.
The content of the invention
Present invention solves the technical problem that it is to provide a kind of carbon material and preparation method thereof, the carbon material that the application provides
As the negative material of lithium battery, lithium ion battery is set to have higher energy density, power density and cost relatively low.
In view of this, this application provides a kind of carbon material, including：
Carbon core；The first material with carbon on carbon core surface is coated on, is coated on second carbon material on first material with carbon surface；
The carbon core is graphite or MCMB；The first material with carbon is hard carbon, graphene or CNT, institute
It is amorphous carbon or graphite to state the second carbon material.
Preferably, the content of the carbon core is 59wt%~99.8wt%, and the content of the first material with carbon is 0.1wt%
~40wt%, second carbon material are 0.1wt%~10wt%.
Present invention also provides a kind of preparation method of carbon material, comprise the following steps：
Carbon nuclear material, first material with carbon are mixed in a solvent with the second carbon material, obtain mixed liquor；
The mixed liquor is evaporated, it is subsequently heat-treated, obtain carbon material；
The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or heat
Solution produces the carbon materials material precursor of hard carbon, and second carbon material is the carbon material forerunner that graphite or pyrolysis produce amorphous carbon
Body.
Preferably, the particle diameter of the carbon nuclear material is 10 μm~30 μm, and the particle diameter of the first material with carbon is 0.1 μm~10
μm, the particle diameter of second carbon material is 0.1~10 μm.
Preferably, the equipment of the evaporation is Rotary Evaporators, and the temperature of the evaporation is 100 DEG C~150 DEG C.
Preferably, the temperature of the evaporation is 120 DEG C~130 DEG C.
Preferably, the heat treatment is carried out under nitrogen atmosphere protection, the heating rate of the heat treatment for 2 DEG C/min~
6 DEG C/min, the temperature of the heat treatment is 800 DEG C~1200 DEG C, and the time of the heat treatment is 1.5h~3h.
Present invention also provides a kind of preparation method of carbon material, comprise the following steps：
Carbon nuclear material, first material with carbon are mixed with solvent, obtain the first mixed liquor, the second carbon material is mixed with solvent
Close, obtain the second mixed liquor；
It is heat-treated after first mixed liquor is evaporated, obtains the first cladding carbon material；
Described first cladding carbon material is mixed with second mixed liquor, is heat-treated after evaporation, obtains carbon material；
The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or heat
Solution produces the carbon materials material precursor of hard carbon, and second carbon material is the carbon material forerunner that graphite or pyrolysis produce amorphous carbon
Body.
Preferably, the carbon materials material precursor that the pyrolysis produces hard carbon is petroleum base resin, and the pyrolysis produces amorphous
The carbon materials material precursor of carbon is coal tar asphalt.
Present invention also provides a kind of lithium ion battery, including negative pole, positive pole, electrolyte and barrier film, it is characterised in that institute
The material for stating negative pole is the carbon material prepared by the carbon material or such scheme described in such scheme.
This application provides a kind of carbon material, and it includes carbon core, first material with carbon and the second carbon material, first carbon materials
Material be coated on carbon core surface, second carbon material is coated on the first material with carbon surface, wherein the carbon core be graphite or
MCMB, the first material with carbon are hard carbon, graphene or CNT, second carbon material be amorphous carbon or
Graphite.The carbon core for the carbon material that the application provides is to provide the component of energy density, and first material with carbon is that the improvement power of battery is close
The component of degree, life-span and security, and the second carbon material has relatively low specific surface area, is easy to form solid phase with electrolyte interface
Electrode interface, to protect carbon core and first material with carbon, therefore the carbon material that the application provides is by setting carbon core, first material with carbon
With the second carbon material, make the negative pole that carbon material is applied to lithium ion battery that there is higher energy density and power density；Simultaneously
The carbon material that the application uses can be obtained by simple approach, then the carbon material cost of the application is relatively low.
Present invention also provides the preparation method of carbon material., can be first on carbon core surface during carbon material is prepared
First material with carbon is coated, then in the carbon material of first material with carbon Surface coating second；Can also be directly in carbon core Surface coating first
Carbon material and the second carbon material；Above two method is realized by simple mixing, evaporation and heat treatment, preparation process
Simply, cost is reduced.
Embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are simply further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
The embodiment of the invention discloses a kind of carbon electrode material, including：
Carbon core；The first material with carbon on carbon core surface is coated on, is coated on second carbon material on first material with carbon surface；
The carbon core is graphite or MCMB；The first material with carbon is hard carbon, graphene or CNT, institute
It is amorphous carbon or graphite to state the second carbon material.
The carbon electrode material that the application provides has double-coating structure, and wherein carbon core is the component for contributing energy density,
It is coated by first material with carbon, and first material with carbon is the material for having high power, long-life and high security, is in whole material
Improve the component of power, life-span and security, first material with carbon is coated by the second carbon material, and the second carbon material has low ratio table
Area, Solid phase electrolysis interface easily is formed with electrolyte interface, thus, the carbon core and the first carbon of the carbon electrode material setting of the application
Material makes carbon electrode material have higher energy density, power density, life-span and security, and is coated on the second carbon material
It can ensure that carbon electrode material forms solid phase electrode interface with electrolyte interface, therefore the carbon material of the application is as lithium-ion electric
The negative material in pond, make lithium ion battery that there is higher energy density, power density, security and life-span.
Herein described carbon core is graphite or MCMB, and the graphite can be native graphite or people
Graphite is made, the carbon core is to provide the component of energy density in carbon electrode material.The content of the carbon core be 59wt%~
99.8wt%, more preferably 70wt%~90wt%.If the content of carbon core is too low, the energy density of carbon electrode material can be made too
It is low, if the too high levels of carbon core, the lifting of carbon material power density can be influenceed.For coming for graphite or carbonaceous mesophase spherules
Source, the application have no particular limits.
According to the application, the first material with carbon for being coated on carbon core surface is hard carbon, graphene or CNT, described second
Carbon material is characterized in that with high efficiency, long-life and high security it is to improve power, life-span in whole carbon electrode material
With the component of security.The hard carbon refers to be difficult to the carbon being graphitized, and is the thermal decomposition product of high molecular polymer, described hard
Carbon can be resin carbon, carbon black etc..The hard carbon material is respectively provided with very high reversible specific capacity.The graphene is that one kind has carbon
The material of the individual layer laminated structure of atomic building.The content of the first material with carbon is 0.1wt%~40wt%, is preferably
5wt%~35wt%, the content of the first material with carbon is too low, then can influence the lifting of power density, too high levels, then can lead
Enable metric density declines.The application has no particular limits for the source of the hard carbon, graphene or CNT.The application
The middle material as carbon core can not exchange with being coated on the first material with carbon on carbon core surface, and this is due to high-power
One carbon material is advantageous to the quick charge electric discharge of lithium ion as clad.
Second carbon material on first material with carbon surface is coated in the application as external coating, itself and electrolyte can be made
Interface forms solid phase electrode interface.Second carbon material is amorphous carbon or graphite.The content of second carbon material is
0.1wt%~10wt%, preferably 3wt%~8wt%.The content of second carbon material is too low, then can not be with electrolyte shape
Into interface is effectively protected, too high levels then can make specific surface area cause energy density to decline greatly very much.
Present invention also provides a kind of preparation method of carbon electrode material, comprise the following steps：
Carbon nuclear material, first material with carbon are mixed in a solvent with the second carbon material, obtain mixed liquor；
The mixed liquor is evaporated, it is subsequently heat-treated, obtain carbon electrode material；
The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or heat
Solution produces the carbon materials material precursor of hard carbon, and second carbon material is the carbon material forerunner that graphite or pyrolysis produce amorphous carbon
Body.
During carbon electrode material is prepared, the carbon nuclear material of the application, first material with carbon pass through with the second carbon material
The process of mixing, evaporation and heat treatment, the structure of double-deck carbon material cladding is obtained.
The application is during carbon electrode material is prepared, first by carbon nuclear material, first material with carbon and the second carbon material
Mix in a solvent, obtained mixed liquor.During the mixing, the solvent is preferably paraxylene, and it is advantageous to
The dissolving of above-mentioned three kinds of carbon materials, while be also easy to separate in subsequent processes.The carbon nuclear material is graphite or centre
Phase carbon microspheres, its particle diameter are preferably 10~30 μm, and the carbon nuclear material in the range of this makes the energy density highest of carbon material, the carbon
The particle diameter of nuclear material is more preferably 15~20 μm.The first material with carbon is that graphene, CNT or pyrolysis produce hard carbon
Carbon materials material precursor, preferably petroleum base resin, epoxy resin, natural plant fibre, lignin or carbon liquefied residue, more preferably
For petroleum base resin；The particle diameter of the first material with carbon is preferably 0.1~10 μm, and the first material with carbon in the range of this makes carbon electrode
The power density highest of material, the particle diameter of the first material with carbon are more preferably 2~7 μm.Second carbon material be graphene,
CNT or pyrolysis produce the carbon materials material precursor of amorphous carbon, preferably coal tar asphalt, the grain of second carbon material
Footpath is preferably 0.1~10 μm, and the second carbon material in the range of this makes the outer layer that is formed after cladding most uniform, is formed with electrolyte
Solid phase interface is most stable, and the particle diameter of second carbon material is more preferably 3~8 μm.
According to the present invention, after mixed liquor is prepared for, then the mixed liquor is evaporated, is then heat-treated,
So as to obtain carbon material.In order that the organic solvent in mixed liquor is easy to steam, the application is preferably using Rotary Evaporators to institute
Mixed liquor is stated to be evaporated.The Rotary Evaporators are by Electronic Control, make container under most suitable speed, with constant speed rotary
Increase disengagement area, and container for evaporation is in negative pressure state by vavuum pump, container for evaporation is placed in oil bath pan simultaneously in rotation
Middle heated at constant temperature, solution carries out heating diffusive evaporation in rotary flask in bottle.The process that the application is evaporated in mixed liquor
In because the evaporation of solution makes first material with carbon and the second carbon material constantly separate out be coated on the surface of carbon nuclear material.The evaporation
Temperature be preferably 100 DEG C~150 DEG C, the evaporating temperature is too low, causes the operating time long, and in the mixed liquor
Solution can not volatilize completely, influence the covered effect of carbon electrode material；Evaporating temperature is too high, then can cause to coat uneven.
After the mixed liquor is evaporated, then it is heat-treated, makes the material after pervaporation by dehydration, dehydrogenation polymerization and carbon
Change, ultimately form effectively double-deck carbon material clad.In order to avoid carbon electrode material introduces other impurities in preparation process
And covered effect is influenceed, the application is preferably carried out under nitrogen atmosphere protection.In order to ensure the covered effect of double-deck carbon material, institute
The heating rate for stating heat treatment is preferably 2 DEG C/min~6 DEG C/min, and the temperature of the heat treatment is preferably 800 DEG C~1200 DEG C,
The time of the heat treatment is preferably 1.5h~3h.
Present invention also provides a kind of preparation method of carbon material, comprise the following steps：
Carbon nuclear material, first material with carbon are mixed with solvent, obtain the first mixed liquor, the second carbon material is mixed with solvent
Close, obtain the second mixed liquor；
It is heat-treated after first mixed liquor is evaporated, obtains the first cladding carbon material；
Described first cladding carbon material is mixed with second mixed liquor, is heat-treated after evaporation, obtains carbon material；
The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or heat
Solution produces the carbon materials material precursor of hard carbon, and second carbon material is the carbon material forerunner that graphite or pyrolysis produce amorphous carbon
Body.
The above-mentioned process for preparing carbon material is first in the Surface coating first material with carbon of carbon nuclear material, then by the first carbon coated
Material mixes with the solution of the second carbon material, through pervaporation with after heat treatment, finally being coated in the first cladding carbon material surface
Second carbon material, has obtained carbon material.From said process, the process that said process prepares carbon material is first to be prepared for first
The material of carbon material carbon coated core, then it is prepared for coating the double-coating material of second layer carbon material again.
The above-mentioned selection for preparing involved parameter during carbon material and preferred scheme and the first preparation carbon materials
The method of material is identical, is no longer repeated herein.
Present invention also provides a kind of lithium ion battery, the negative material of the lithium ion battery is carbon described herein
Material.By herein described carbon material be used for lithium ion battery negative pole, make lithium ion battery have higher energy density with
Power density.
This application provides a kind of carbon electrode material, it includes carbon core, first material with carbon and the second carbon material, and described first
Carbon material is coated on carbon core surface, and second carbon material is coated on the first material with carbon surface, wherein the carbon core is stone
Ink or MCMB, the first material with carbon are hard carbon, graphene or CNT, and second carbon material is amorphous
Carbon or graphite.The carbon core for the carbon electrode material that the application provides is to provide the component of energy density, and first material with carbon is to improve electricity
The component of pond power density, and the second carbon material has relatively low specific surface area, is easy to form solid phase electrode with electrolyte interface
Interface, to protect carbon core and first material with carbon, therefore the carbon electrode material that the application provides is by setting carbon core, first material with carbon
With the second carbon material, make carbon electrode material that there is higher energy density and power density.
On the other hand, present invention also provides the preparation method of carbon electrode material.During carbon electrode material is prepared,
The application can directly prepare the carbon material with double-coating structure；First with one layer of clad structure can also first be prepared
Carbon material is coated, then the second carbon material is coated in the first cladding carbon material surface, obtains that there is double-deck carbon material carbon coated core
Carbon material, but be first to prepare mixed solution during carbon material is prepared, then mixed solution is evaporated, again finally
The process being heat-treated, from said process, the preparation method technique of carbon material is simple, cost is relatively low.
For a further understanding of the present invention, carbon electrode material provided by the invention is carried out specifically with reference to embodiment
Bright, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Using the spherical natural graphite of 17 microns of average grain diameter as the core of negative material, that is, carbon material A, using flat
The petroleum base resin of equal 7 microns of particle diameter uses 3 microns of coal tar of average grain diameter as internal layer covering material, that is, carbon material B
Oil asphalt is as external sheath material.
Weigh 800 grams of spherical natural graphites, 200 grams of coal tar asphaltes, 200 grams of petroleum base resins respectively first.Spherical day
Right graphite and solvent paraxylene are mixed to form the suspension that concentration is 0.5M；Petroleum base resin and coal tar asphalt are separately added into
The solution that concentration is 1.0M is formed into solvent paraxylene.Three kinds of solution are stirred at room temperature it is well mixed, using rotation
Evaporimeter makes solvent gradually volatilize in 125 DEG C of dryings, is finally heat-treated under nitrogen atmosphere protection in tube furnace, nitrogen
The ml/min of flow 30,5 degrees/min of heating rate, 1000 degree of final temperature, 2 hours are stopped, have obtained double-coating
Advanced carbon material.Negative pole using carbon material manufactured in the present embodiment as half-cell, the test result such as institute of table 1 of half-cell performance
Show.
Embodiment 2
Using the spherical natural graphite of 17 microns of average grain diameter as the core of negative material, that is, carbon material A, using flat
The lignin of equal 7 microns of particle diameter is dripped as internal layer covering material, that is, carbon material B using 3 microns of coal tar of average grain diameter
Green grass or young crops is used as external sheath material.
Weigh 800 grams of spherical natural graphites, 200 grams of coal tar asphaltes, 200 grams of lignin respectively first.Spherical natural stone
Ink and solvent paraxylene are mixed to form the suspension that concentration is 0.5M.Lignin and coal tar asphalt are added separately to solvent pair
The solution that concentration is 1.0M is formed in dimethylbenzene.First lignin liquor and graphite suspension are stirred at room temperature it is well mixed,
Solvent is gradually volatilized in 125 DEG C of dryings using Rotary Evaporators, heat is finally carried out in tube furnace under nitrogen atmosphere protection
Processing, nitrogen flow 30ml/min, 5 DEG C/min of heating rate, 1000 DEG C of final temperature, stop 2h, obtained one layer cladding
Material；Then this layer of covering material is added to be well mixed in cold primer-oil and forms suspension, using Rotary Evaporators
Solvent is gradually volatilized in 125 DEG C of dryings, be finally heat-treated under nitrogen atmosphere protection in tube furnace, nitrogen flow
30ml/min, 5 DEG C/min of heating rate, 1000 DEG C of final temperature, 2h is stopped, has obtained the advanced carbon material of double-coating.Will
Negative pole of the carbon material manufactured in the present embodiment as half-cell, the test result of half-cell performance are as shown in table 1.
Embodiment 3
Using the spherical natural graphite of 17 microns of average grain diameter as the core of negative material, that is, carbon material A, using flat
The petroleum base resin of equal 7 microns of particle diameter uses 3 microns of coal tar of average grain diameter as internal layer covering material, that is, carbon material B
Oil asphalt is as external sheath material.
Weigh 500 grams of spherical natural graphites, 200 grams of coal tar asphaltes, 800 grams of petroleum base resins respectively first.Spherical day
Right graphite and solvent paraxylene are mixed to form the suspension that concentration is 0.5M, and resin and pitch are added separately to solvent to diformazan
The solution that concentration is 1.0M is formed in benzene.Three kinds of solution are stirred at room temperature it is well mixed, using Rotary Evaporators at 125 DEG C
Drying makes solvent gradually volatilize, and is finally heat-treated under nitrogen atmosphere protection in tube furnace, nitrogen flow 30ml/min,
5 DEG C/min of heating rate, 1000 DEG C of final temperature, 2h is stopped, has obtained the advanced carbon material of double-coating.By the present embodiment system
Negative pole of the standby carbon material as half-cell, the test result of half-cell performance are as shown in table 1.
The performance data table of carbon material prepared by the embodiment 1~3 of table 1 as electrode material half-cell
The explanation of above example is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that pair
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
- A kind of 1. carbon material, it is characterised in that including：Carbon core；The first material with carbon on carbon core surface is coated on, is coated on second carbon material on first material with carbon surface；The carbon core is graphite or MCMB；The first material with carbon is hard carbon, graphene or CNT, described Two carbon materials are amorphous carbon or graphite；The content of the carbon core is 59wt%~99.8wt%, and the content of the first material with carbon is 0.1wt%~40wt%, institute It is 0.1wt%~10wt% to state the second carbon material；The particle diameter of the carbon core is 10 μm~30 μm, and the particle diameter of the first material with carbon is 0.1 μm~10 μm, second carbon materials The particle diameter of material is 0.1~10 μm.
- 2. a kind of preparation method of carbon material, comprises the following steps：Carbon nuclear material, first material with carbon are mixed in a solvent with the second carbon material, obtain mixed liquor；The mixed liquor is evaporated, it is subsequently heat-treated, obtain carbon material；The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or pyrolysis production The carbon materials material precursor of stiff carbon, second carbon material are the carbon materials material precursor that graphite or pyrolysis produce amorphous carbon；The content of the carbon core is 59wt%~99.8wt%, and the content of the first material with carbon is 0.1wt%~40wt%, institute It is 0.1wt%~10wt% to state the second carbon material；The particle diameter of the carbon core is 10 μm~30 μm, and the particle diameter of the first material with carbon is 0.1 μm~10 μm, second carbon materials The particle diameter of material is 0.1~10 μm.
- 3. preparation method according to claim 2, it is characterised in that the equipment of the evaporation is Rotary Evaporators, described The temperature of evaporation is 100 DEG C~150 DEG C.
- 4. preparation method according to claim 2, it is characterised in that the temperature of the evaporation is 120 DEG C~130 DEG C.
- 5. preparation method according to claim 2, it is characterised in that the heat treatment is carried out under nitrogen atmosphere protection, The heating rate of the heat treatment is 2 DEG C/min~6 DEG C/min, and the temperature of the heat treatment is 800 DEG C~1200 DEG C, the heat The time of processing is 1.5h~3h.
- 6. a kind of preparation method of carbon material, comprises the following steps：Carbon nuclear material, first material with carbon are mixed with solvent, obtain the first mixed liquor, the second carbon material is mixed with solvent, obtained To the second mixed liquor；It is heat-treated after first mixed liquor is evaporated, obtains the first cladding carbon material；Described first cladding carbon material is mixed with second mixed liquor, is heat-treated after evaporation, obtains carbon material；The carbon nuclear material is graphite or MCMB, and the first material with carbon is graphene, CNT or pyrolysis production The carbon materials material precursor of stiff carbon, second carbon material are the carbon materials material precursor that graphite or pyrolysis produce amorphous carbon；The content of the carbon core is 59wt%~99.8wt%, and the content of the first material with carbon is 0.1wt%~40wt%, institute It is 0.1wt%~10wt% to state the second carbon material；The particle diameter of the carbon core is 10 μm~30 μm, and the particle diameter of the first material with carbon is 0.1 μm~10 μm, second carbon materials The particle diameter of material is 0.1~10 μm.
- 7. preparation method according to claim 6, it is characterised in that it is described pyrolysis produce hard carbon carbon materials material precursor be Petroleum base resin, the carbon materials material precursor that the pyrolysis produces amorphous carbon is coal tar asphalt.
- 8. a kind of lithium ion battery, including negative pole, positive pole, electrolyte and barrier film, it is characterised in that the material of the negative pole is power Profit requires that any one of the carbon material described in 1 or the carbon material prepared by any one of claim 2~5 or claim 6~7 are made Standby carbon material.
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| EP3134932B1 (en) | 2014-04-25 | 2021-08-25 | South Dakota Board of Regents | High capacity electrodes |
| CN108807861B (en) * | 2017-05-03 | 2021-11-30 | 安普瑞斯（南京）有限公司 | Silicon-carbon composite material for lithium ion battery and preparation method thereof |
| CN108117056B (en) * | 2017-12-11 | 2021-07-16 | 上海交通大学 | Preparation method of graphene-coated plasma modified mesocarbon microbeads |
| CA3098915A1 (en) * | 2018-01-09 | 2019-07-18 | South Dakota Board Of Regents | Layered high capacity electrodes |
| US10468674B2 (en) | 2018-01-09 | 2019-11-05 | South Dakota Board Of Regents | Layered high capacity electrodes |
| CN111764158B (en) * | 2020-07-28 | 2023-01-24 | 唐山烯彤科技有限公司 | Preparation method of conductive short fiber |
| CN112694086A (en) * | 2020-12-10 | 2021-04-23 | 宁波杉杉新材料科技有限公司 | Modified graphite material, preparation method and application thereof, and lithium ion battery |
| CN112886008A (en) * | 2021-01-19 | 2021-06-01 | 青海凯金新能源材料有限公司 | Carbon-coated graphite negative electrode material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903896A (en) * | 2012-10-22 | 2013-01-30 | 深圳清华大学研究院 | Silicon carbon composite negative electrode material for lithium ion battery as well as preparation method and applications of material |
| CN102956889A (en) * | 2012-11-05 | 2013-03-06 | 江西正拓新能源科技有限公司 | Lithium ion battery composite negative electrode material and preparation method thereof |
| CN103346293A (en) * | 2013-06-28 | 2013-10-09 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery cathode material and preparation method thereof as well as lithium ion battery |
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| CN102903896A (en) * | 2012-10-22 | 2013-01-30 | 深圳清华大学研究院 | Silicon carbon composite negative electrode material for lithium ion battery as well as preparation method and applications of material |
| CN102956889A (en) * | 2012-11-05 | 2013-03-06 | 江西正拓新能源科技有限公司 | Lithium ion battery composite negative electrode material and preparation method thereof |
| CN103346293A (en) * | 2013-06-28 | 2013-10-09 | 中国科学院宁波材料技术与工程研究所 | Lithium ion battery cathode material and preparation method thereof as well as lithium ion battery |
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Effective date of registration: 20180425 Address after: 214181 No. 88, Yu Zhou road, Qian Zhou street, Huishan District, Wuxi, Jiangsu. Patentee after: Amperex Technology Limited, Wuxi Address before: 266613 Shandong Qingdao Laixi Nan Shu new graphite material gathering area Qingdao Ling Ke new energy Co., Ltd. Patentee before: QINGDAO LINGKE NEW ENERGY CO., LTD. |